350 SLC 1972 troubleshooting

Hi,

rubber blcoks meaning Pertinax cams ?

Volker schrieb: Hi,

rubber blcoks meaning Pertinax cams ?

Yes, I don't know the correct idiom - called them so in my tool's instruction.

Regards
Norbert

As i am waiting to receive my new trigger contacts, i decided to test the fuel pressure.

I have orderd a fuel pressure gage on ebay. .

Received it today and conduct a first test.
I added the gage on the incoming fuel line just before the injector common rail.


I put the switch key on, listen for the fuel pump for 2 seconds and see the gage climbing to 1.9 bars.


When i start the engine, the gage is set to a full 2 bars as you can see on the following video (it wasn't my first try that is why the gage is not a zero at the beginning).



30 minutes after a test, the fuel pressure is getting down. I am note sure if this is normal.

As soon as the key switch is on again the ful pump is on for 2 seconds and it goes back to 1.9.


I guess this overall behavior is normal. And i consider the fuel supply system to be working fine.

Hi Sylvain,
the behavior is o.k.
Pressure is allowed to sink to 1,8 Bar - and has to hold then for a minute or so.

Please check your measuring device. We found out the manometers are misadjusted quite often.
Cross-check it with a reliable unit - maybe a tyre-manometer professionally used at a gas station.

Regards
Norbert

I will try to benchmark my pressure gage.

To continue my troubleshooting, I opened my ECU to try to see if there is something obviously wrong with it.

It is a 0 280 002 004 that is correct for the 350 SLC engine.
It has an RT sticker and mark on it.
Not sure what RT stand for.




There is also a j118 and j101 marking inside.


There is some blue marks on the components.
It seems to have been previously tested or repaired.




Is there some simple way to test if with a multimeter or should I have an oscilloscope ?

Regards
Sylvain